Thunderstorms
Hazardous WX
Random
Fronts
Tornadoes
100

These 3 conditions are the recipe for a thunderstorm.

What is moist air, a lifting mechanism, and unstable atmosphere.

100
Severe icing not associated with a thunderstorm would cause an issuance of this.
What is a Sigmet?
100

What is the difference between a UUA and a UA PIREP?

UUA = Urgent, UA = Regular (unidentified airmen)

100

These types of clouds are produced along a cold front if there is enough moisture in the atmosphere.

What are cumulus clouds?

100

This is the difference between a funnel cloud and a tornado.

What is a one touches the ground?

200

This is a non-frontal narrow band of active thunderstorms.

What is a squall line?

200

One of these 3 conditions must be present for WA Tango to be issued. 

What is moderate turb, surface winds greater than 30kts, or LLWS (non-convective)?

200

What is the significance of a small vs large lapse rate? 

small = more stable atmosphere

large = less stable atmosphere

200
These are the three principal types of fronts.
What is warm, cold, and stationary?
200
When a funnel cloud touches down in water it is called this.
What is a water spout?
300

This thunderstorm is not associated with a front or pressure system

What is an air mass thunderstorm?

300

All TS imply these three elements.

What are Severe Turbulence, Severe Icing, and LLWS?

300

What is the difference between induction and structural icing?

"Induction" = air system (engine)

Structural  = exterior icing on aircraft structure

300
Winds near a frontal boundary of a stationary front tend to flow this way.
What is parallel to the frontal boundary in opposite directions?
300
The first stage of a tornado is called

What is dust whirl?

400
One of these 3 elements must be present for a TS to be considered Severe.

What is hail greater than 3/4 inch, a tornado, or winds greater than 50 knots at the surface?

400

Other than severe Turb and Icing, a WS may be issued for these 3 conditions.

What are widespread Dust Storms, Sand Storms or Volcanic Ash. 

400

A Jetstream is defined as winds at or above ____ kts, but a high prog chart only depicts them above ____ kts. 

50, 80

400

A frontal passage can be noted when these 3 conditions occur. 

What are pressure, wind, and temp changes?

400

This type of cloud connects the TS to a tornado.

What is a wall cloud?

500

Cold descending wind from downdrafts creates this type of front that can create new TS.

What is a gust front?

500
These 6 conditions will cause a Convective Sigmet to be issued
What is Embedded T-storm, a line of T-storms, thunderstorms covering 40% of a 3000 square mile area, Surface winds 50 kts or greater, hail 3/4 inches or greater, and tornadoes.
500

_______ icing is typically associated with Stratus clouds, while ______ icing is commonly associated with Cumulus clouds.

Rime

Clear

500

Freezing rain is associated with this type of front.

What is a warm front?

500

These 3 conditions are required for a tornado to form.

What is vertical wind sheer, TS, unstable atmosphere?

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